Cross flame gas burner



May 29, 1934- N. E. WERNER CROSS FLAME GAS BURNER Filed April 4, 1932INVENTOR. /Ve/J Z. W6/776/ A TTORNEY.

Patented May 29, 1934 UNETED STATES PATENT OFFICE 15 Claims.

My invention relates to burners and more particularly to a device ofthat character particularly adapted for burning gas.

The principal object of my invention is to .5 provide a burner that willeffect crossing of the flames in such a manner that the molecularstructure of the gases is completely broken up and that an aspiratingelfect is produced for 1 thoroughly commingling the gas molecules withair.

In accomplishing this and other objects of my invention, I haveprovidedimproved details of structure, the preferred form of which isillustrated in the accompanying drawing,

wherein:

Fig. 1 is a perspective View of a burner constructed in accordance withmy invention.

Fig. 2 is a longitudinal section on the line 2-2 Fig. 3, illustratingparticularly the crossing of the flames issuing from the burner.

Fig. 3 is a cross section of the burner on the line 3-3 Fig. 2, showinga primary air door in partly opened condition.

Fig. 4 is an enlarged sectional view of a burner Jet.

Referring more in detail to the drawing:

1 designates a preferably rectangular burner housing having a bottom andend walls 2 and 3, front and rear walls 4 and 5 and a top wall 6.

A pair of inner intermediate partition walls 7 divide the burner housingin left and right chambers 8 and 9 and are spaced to produce a secondaryair passage 10 opening through the front and rear walls as respectivelyshown at 11 and 12.

. 5 Mounted longitudinally in the housing and extended through openings13 in the partition walls is a manifold 14 connected at its center witha supply line 15 leading outwardly from the housing through the rearopening 12 to a suitable source of fuel supply.

Connected to the longitudinal manifold and communicating therewith are aplurality of vertical branches 16 each in turn including a series ofnozzles or jets 17 provided with caps 18 threaded or otherwise securedthereon and havand at an angle from these branches to direct the fuelfrom the oblique jets into the path of fuel flowing from the lateraljets.

This arrangement of the jets in the horizontal series is preferablyreversed in the next lower series so that the flames from the obliquejets will cross each other Without meeting directly, thereby producinganaspirating effect along a transverse center line of the burner housingto draw secondary air through the passage 10 as illustrated in Fig. 2.

The front Wall 4 of the housing is provided with openings 19 and 20 forrespectively receiving lateral and oblique mixing nozzles 21 and 22fixed in the openings by welding or the like in substantially concentricalignment with the jets, a space 23 being reserved between the innerends of the mixing nozzles and the outer ends of the jets to admit asupply of air into the mixing nozzles together with gas flowing 76 fromthe jets, and the inner ends 24 of the mixing nozzles being preferablybell-shaped to facilitate such entering movement.

Under ordinary conditions, air is supplied in sufficient quantities tothe left and right chambers through openings 25 and 26 in the rear Wall5, these openings being controlled by doors 27 pivotally carried onshafts 28 extended through cooperating bearing brackets 29 and 30 fixedrespectively to the doors 27 and to the rear Wall 5.

As is particularly shown in Fig. 3, the bearing brackets are secured tothe doors above their longitudinal central line so that the portion ofthe door below the hinge will be heavier and the door be normally closedby gravity.

Ears 31, preferably formed integrally with the doors adjacent the loweredges, are provided with openings 32 for receiving an end of a controlrod or other suitable device (not shown) for actuating the doors, itbeing desirable to automatically control both the supply of fuel to theburner and the relative opening of the doors by flow meters or similardevices, thereby insuring admittance of a proper amount of air for thefuel consumed.

If under unusual conditions, the supply of air flowing through theprimary air inlets is insufficient, additional air may be introducedthrough the secondary air inlet 12 which is normally closed by a gate 33slidably mounted on the supply line 15 and provided with a collar 34secured in adjusted position on the inlet line by a set screw 35. 1

As in other burners of this character, a pilot is provided including arelatively small nozzle 36 secured to the front wall of the housing incommunication with a line 37 running parallel to the inlet line andprovided with a lateral portion 38 terminating in an elbow 39 adjacentthe pilot nozzle.

Assuming a burner to be constructed and assembled as described, itsoperation would be as follows:

After opening the pilot line and lighting the fuel flowing from theline, a valve (not shown) controlling flow of fuel to the supply line isopened and fuel mixed with air entering through the primary inletopenings will be ignited by the pilot light as in ordinary practice.

Due to the alternate oblique arrangement of jets in the oppositechambers of the burner nozzles, the flames leading from the obliquenozzles will cross each other, but will'be directed into the path offlames leading from the lateral nozzles, thus causing impingement of thesets of streams against each other for breaking up the molecularstructure of the fuel and producing an aspirating effect which will drawair through the mixing nozzles into the center of the combining flames.

Should the amount of air thus commingled with the fuel be insufficientfor most effective combustion, the door closing the secondary air inletmay be opened and adjusted until the proper mixture is obtained.

The burner is preferably'so mounted, in a furnace or other location,where it is to be used, that the flames will cross each other within thecombustion chamber to promote the aspirating effect and result in morerapid combustion.

What I claim and desire to secure by Letters Patent is:

1. A burner including rows of spaced series of oblique nozzlesalternately extending in opposite directions to effect crossing offlames from one row over the other row in alternate planes.

2. A burner including spaced series of oblique nozzles alternatelyextending in opposite directions to effect crossing of flames one abovethe other in alternate planes, and spaced series of nozzles fordirecting fuel into the paths of said crossing flames.

3. A burner including rows of spaced series of oblique nozzlesalternately extending in opposite directions to effect crossing of theflames one over the other in alternate planes, and rows of spaced seriesof nozzles for directing fuel into the paths of said crossing flames.

4. A burner including upper and lower pairs of horizontally alignednozzles arranged to effect flow of fuel from one of said upper nozzlesobliquely into the path or flow of its aligned nozzle and reverseoblique flow from one of said lower nozzles into the pathof flow of itsaligned nozzle.

5. A'burner including a plurality of vertically spaced pairs of nozzlesalternately arranged to effect oblique flow of fuel from one nozzle intothe path of flow of the other nozzle of a pair.

6 A burner including a manifold, a series of nozzles extending laterallyfrom said manifold, and a series of nozzles joining the manifold at anangle to effect flow of fuel obliquely into the paths of fuel flowingfrom the first named series.

71A burner including a manifold, a series of lateral and oblique nozzleson said manifold arranged to effect flowof fuel from the oblique nozzlesinto the paths of fuel flowing from the lateral nozzles, and a-se'condseries of aligned the right compartment,

lateral and oblique nozzles arranged reversely to said first namedseries.

8. A burner including a housing having separate compartments, a manifoldin said compartments, a jet in one compartment extending laterally fromthe manifold, a jet in the other compartment extending obliquely fromthe manifold and directed toward the path of flow of fuel from the firstnamed jet, and mixing nozzles in the housing in substantially concentricalignment with said jets.

9. A burner including a housing having separate compartments, a manifoldin said compartments, a jet in one compartment extending laterally fromthe manifold, a jet in the other compartment extending obliquely fromthe manifold and directed toward the path of flow of fuel from thefirst-named jet, mixing nozzles in the housing in substantiallyconcentric alignment with said jets, and air inlets for thecompartments.

10. A burner including a housing having spaced compartments to form anair inlet between the compartments, a manifold in said compartments, ajet in one compartment extending laterally from the manifold, a jet inthe other compartment extending obliquely from the manifold and directedtoward the path of flow of fuel from the first named jet, mixing nozzlesin the housing in substantially concentric alignment with said jets, andmeans for adjusting the effective area of said inlet.

11. A burner including a housing having spaced left and rightcompartments to form an air inlet between the compartments, a manifoldin said compartments, an upper jet in the right compartment extendinglaterally from said manifold, a horizontally aligned jet in the leftcompartment extending obliquely from the manifold toward the rightcompartment, lower horizontally aligned jets in the compartmentsarranged in reverse relation to the upper jets, nozzles in the housingin substantially concentric alignment with the jets, and means foradjusting the effective area of said inlet.

12. A'burner including a housing having right and left compartments, amanifold in said compartments, an upper jet in the right compartmentextending laterally from said manifold, a horizontally'aligned jet inthe left compartment extending obliquely from the manifold toward lowerhorizontally aligned jets in the compartments in reverse relation to theupper jets, nozzles in the housing in substantially concentric alignmentwith the jets, and individual air inlets for the compartments.

13. A burner including a housing having right and left compartments, amanifold in the compartments, a series of jets in the right compartmentextending laterally from said manifold, a horizontally aligned series ofjets in the left compartment extending obliquely from the manifoldtoward the right compartment, parallel series of jets in the right andleft compartments in reverse relation to said first-named alignedseries, an individual air inlet for each compartment, and a secondaryair passage between the compartments.

14. A burner including a housing having right and left compartments, amanifold in the compartments, jets on the manifold arranged to directflamesalternately from opposite compartments obliquely toward atransverse center line between the compartments, and nozzles in towardthe right compartment, parallel jets in the right and left compartmentsin reverse relation to said first named aligned jets, an individual airinlet for each compartment, means for adjusting the effective area ofsaid individual air inlets, and means for adjusting the effective areaof the inlet between said compartments.

NELS E. WERNER.

